专业英语四级作文的提升考的不仅仅是死记硬背，还需要掌握一定的写作技巧，我们一起来看一下这篇英语专四写作技巧：长短句交插吧!
长短句交插改变一下句子的类型，把简单句、并列句和复合句混合在一起使用。如果句子清一色是简单句，文章必定很单调乏味。如果全篇充满了冗长的复杂句，读起来也很费力。最好的方法是以简单句为基础，配合适当的并列句和复杂句。简单句可长可短，通常要加些附属成分，如分词短语、介词短语、副词短语、不定式动词短语，以及节缩成分。如下面的一段例文：Ihave often wondered whether some people，whohad no intention of making a purchase，would takeadvantage of this privilege. One day I asked thisquestion to the shop girl， and I learned it was indeed the case。
总之，作者可根据情况，使句子多样化，使文章灵活多姿。例如下列五个句子的基本概念一样，但是句式不同，内容重点也有些差别：
(1) The goats grazed peacefully in the farm and were unaware of the approaching hunter. (并列分句)
(2) Grazing peacefully, the goats in the farm were unaware of the approaching hunter. (现在分语短语+简单句)
(3) In the farm, the goats grazed peacefully and were unaware of the approaching hunter. (副词短语+并列分句)
(4) There were goats grazing peacefully in the farm, unaware of the approaching hunter. (简单句+形容语短语)
(5) As the goats grazed peacefully in the farm, they were unaware of the approaching hunter. (原因副词从句+主句)
(1)和(5)的句式最常见;如果加上其他三种互相交替，句子不是更多样化吗?我们再来看看下面两个句子要如何多样化?